IMFByteStreamHandler::CancelObjectCreation method (mfidl.h)

Cancels the current request to create a media source.

Syntax

HRESULT CancelObjectCreation(
  [in] IUnknown *pIUnknownCancelCookie
);

Parameters

[in] pIUnknownCancelCookie

Pointer to the IUnknown interface that was returned in the ppIUnknownCancelCookie parameter of the IMFByteStreamHandler::BeginCreateObject method.

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Remarks

You can use this method to cancel a previous call to BeginCreateObject. Because that method is asynchronous, however, it might be completed before the operation can be canceled. Therefore, your callback might still be invoked after you call this method.

Requirements

See also

IMFByteStreamHandler

Scheme Handlers and Byte-Stream Handlers